Electricity Calculator
See what any appliance really costs to run: enter its wattage, hours per day and your electricity rate to get kWh usage and cost for the day, month and year. A reference table prices common household appliances at your rate.
TheCalculators — Electricity Calculator
Printed thecalculators.com
Monthly Cost
$22.50
150.0 kWh/month · 1,000 W for 5.0 h/day at $0.150/kWh
- Energy per Day
- 5.00 kWh
- Energy per Month
- 150.0 kWh
- Energy per Year
- 1,800 kWh
- Cost per Day
- $0.75
- Cost per Month
- $22.50
- Cost per Year
- $270.00
- Power in kW
- 1.00 kW
- Hours per Year
- 1,800
What common appliances cost at your rate
Typical wattages and usage patterns; your $0.150/kWh rate applied. Adjust hours to match your habits.
Fridges and AC units cycle on/off rather than drawing rated power continuously — their real usage is often 30–50% below nameplate × hours. Heating and cooling dominate most bills.
Most useful next
Formula
kWh = (W × hours ÷ 1000) · Cost = kWh × price per kWh
- • Convert power to kilowatts: W ÷ 1000.
- • Multiply by daily hours and days per month for monthly kWh.
- • Multiply energy by your $/kWh rate for cost; ×12 for the year.
Pro tips
- • Standby ("vampire") draw of 5–10 W per device adds up — a whole house can leak 50–100 W around the clock.
- • Space heaters and dryers are the priciest per hour; swapping a 60 W bulb for 9 W LED saves ~90%.
- • Your exact rate is on the utility bill — divide total $ by total kWh.
FAQ
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